9/11 accused defiant at trial

Five prisoners at Guantanamo Bay who are accused of plotting the September 11 attacks refused to answer a military judge's questions in a chaotic court hearing.

Khalid Sheikh Mohammed, the confessed architect of the suicide plane attacks in 2001, and his four co-defendants exercised their right to indefinitely delay entering a plea to murder and terrorism charges that carry the death penalty.

After a disorderly 13-hour hearing, the tribunal was adjourned until 12 June.